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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Statement of Stockholders' Equity [Abstract] |  |  |  |
Cash dividends (in dollars per share) | $ 0.50 | $ 0.48 | $ 1.00 | $ 0.96
Net exercise of stock options and related tax benefit (in shares) | 7,303 | 3,173 | 12,299 | 4,843
Common stock repurchased and returned to unissued status (in shares) |  |  | 155,093 | 15,500
Shares issued for employee stock ownership plan (in shares) |  |  |  | 38,883
Directors deferred compensation plan (in shares) | 2,027 | 1,967 | 2,443 | 2,251
Restricted stock activity (in shares) | 5,569 | 10,078 | 8,864 | 15,410

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